Link-Layer Topology Discovery Mapper I/O Driver - Windows 7 Service
Link-Layer Topology Mapper I/O Driver by Microsoft Corporation.
This service also exists in Windows 10, 11, 8 and Vista.
Startup Type
| Windows 7 edition | without SP | SP1 |
|---|---|---|
| Starter | Automatic | Automatic |
| Home Basic | Automatic | Automatic |
| Home Premium | Automatic | Automatic |
| Professional | Automatic | Automatic |
| Ultimate | Automatic | Automatic |
| Enterprise | Automatic | Automatic |
Default Properties
| Display name: | Link-Layer Topology Discovery Mapper I/O Driver |
| Service name: | lltdio |
| Type: | kernel |
| Path: | %WinDir%\system32\DRIVERS\lltdio.sys |
| Error control: | normal |
| Group: | NDIS |
Default Behavior
The Link-Layer Topology Discovery Mapper I/O Driver service is a kernel driver. If the Link-Layer Topology Discovery Mapper I/O Driver fails to load or initialize, the error is recorded into the Event Log. Windows 7 startup should proceed, but a message box is displayed informing you that the lltdio service has failed to start.
Dependencies
If the Link-Layer Topology Discovery Mapper I/O Driver is stopped, the following services will not start and initialize:
Restore Default Startup Type of Link-Layer Topology Discovery Mapper I/O Driver
Automated Restore
1. Select your Windows 7 edition and Service Pack, and then click on the Download button below.
2. Save the RestoreLinkLayerTopologyDiscoveryMapperIODriverWindows7.bat file to any folder on your hard drive.
3. Right-click the downloaded batch file and select Run as administrator.
4. Restart the computer to save changes.
Note. Make sure that the lltdio.sys file exists in the %WinDir%\system32\DRIVERS folder. If this file is missing you can try to restore it from your Windows 7 installation media.